HMX SU vs. HMX Xinhai (Heavy)
An in-depth look at the HMX SU and the HMX Xinhai (Heavy) switches—which one is the best fit for you?
Overview
When it comes to choosing the right mechanical keyboard switch, both the HMX SU and the HMX Xinhai (Heavy) stand out as impressive linear options, each catering to different preferences and usage styles. The HMX SU is celebrated for its full PA12 housing that houses a T5 stem, delivering a subtly deep sound profile that many typists appreciate for its balanced auditory feedback. This switch is perfect for users seeking a smooth, linear experience without overwhelming sound while typing or gaming. On the other hand, the HMX Xinhai (Heavy) takes things a step further with its unique PA12 top housing, which promotes softer acoustics, combined with a POM stem that provides a crisp, higher-pitched resonance. This switch offers a refined blend of sophistication and precision, making it ideal for those who enjoy a more pronounced auditory response while still maintaining a linear feel. Ultimately, your choice will depend on whether you prioritize a subtle sound profile or a more lively experience. However, let's dive in a bit deeper beyond generalities so you can best decide on the switch that fits your specific needs and preferences.
By the numbers
Technical specifications
Actuation force
45g
Actuation force
55g
Bottom-out force
50g
Bottom-out force
62.5g
Pre-travel
1.80 mm
Pre-travel
2.00 mm
Total travel
3.60 mm
Total travel
3.40 mm
Factory lubed
Yes
Factory lubed
Yes
Stem construction
Standard
Stem construction
Standard
Stem material
T5
Stem material
POM
Top housing material
Nylon
Top housing material
Nylon
Bottom housing material
Nylon
Bottom housing material
Nylon
Mount type
PCB (5-pin)
Mount type
PCB (5-pin)
Spring
22mm single-stage spring
Spring
22mm single-stage spring
Housing materials
The HMX SU and the HMX Xinhai (Heavy) share a significant similarity in their housing materials, both utilizing nylon for the top and bottom housings. This commonality leads to a uniform sound profile that is characterized by a deeper and fuller auditory experience when typing. The nylon's softer plastic properties allow it to absorb more sound, resulting in a duller and rounder sound rather than the sharper noise produced by harder plastics. This sound absorption capability is crucial for keyboard enthusiasts who prefer a muted, less intrusive typing experience, making both models suitable for quiet work environments or gaming sessions where auditory distraction needs to be minimized.
While both models boast nylon housings, the distinction lies in the potential nuances of sound and feel during operation. The bottom housing influences the bottom-out sound and tactile feedback more significantly, whereas the top housing contributes to the release sound and overall acoustic experience when keys are lifted. Since both the HMX SU and the Xinhai (Heavy) share the same nylon materials in both the top and bottom housings, users can expect similar tactile feedback and sound profiles regardless of which model they choose. This consistency reinforces a predictable experience between the two devices, allowing for user preference centered around design, feel, or additional features rather than differing sound output.
In summary, the housing materials of the HMX SU and the HMX Xinhai (Heavy) create a comparable typing experience built on the characteristics of nylon. Users can confidently select either model, knowing they will receive a keyboard that promotes a softer sound profile and enjoyable tactile feedback. The similarities in construction design ultimately enhance user satisfaction, as both switches are designed to provide an enveloping auditory experience while maintaining the integrity of the keystroke feel with every press and release.
Weight
The HMX SU linear switch and the HMX Xinhai (Heavy) linear switch present distinct characteristics in terms of actuation force and bottom out force, making them suitable for different user preferences. The SU switch features a lighter actuation force of 45 grams and a bottom out force of 50 grams, making it ideal for prolonged use due to its reduced resistance. In contrast, the Xinhai (Heavy) switch requires a stronger actuation force of 55 grams and has a bottom out force of 62.5 grams. This heavier feel may appeal to users who favor a more substantial typing experience. Thus, while both switches serve the purpose of keystroke activation, the HMX SU is better suited for those who prioritize a lighter touch for long typing or gaming sessions, whereas the HMX Xinhai (Heavy) caters to users who prefer a firmer key press.
Travel distance
When comparing the travel distances of the HMX SU linear switch and the HMX Xinhai (Heavy) linear switch, the SU switch features a travel distance of 3.6 mm, while the Xinhai (Heavy) has a slightly shorter travel distance of 3.4 mm. This difference indicates that the SU switch provides a deeper keypress experience, which may be preferable for users who appreciate a more substantial feel when typing. In contrast, the Xinhai (Heavy), with its shorter travel distance, may cater better to gamers and those seeking quicker response times. Consequently, if quick and responsive keystrokes are your priority, the HMX Xinhai (Heavy) would be the more suitable option. For those who enjoy a more pronounced depth in their keystrokes, the HMX SU is the better choice with its longer travel distance.
Price comparison
Which switch is more bang for your buck?
The HMX SU has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the SU for $3.29.
The HMX Xinhai (Heavy) has an MSRP of $3.50 per 10 switches. At Milktooth, we are able to pass on savings to our customers and offer the Xinhai (Heavy) for $3.19.
Here at Milktooth, we offer the best prices on switches (on average, 27% lower the competition). In addition, we offer free shipping on orders over $49.00. We also offer free returns and exchanges, so you can shop with guaranteed satisfaction.
That said, while price is an important piece of the puzzle, our opinion is that you should ultimately pick the option that most suits your unique preferences since you’ll be using these switches for years to come. In other words, finding something perfect for you is, in our view, the most important criteria.
Typing experience
The sound profile of the HMX SU linear switch is characterized by a subtle, relatively deep tone, thanks to its full PA12 housing and T5 stem. This creates a smooth auditory experience that can be quite pleasing to those who prefer a more understated sound. In contrast, the HMX Xinhai (Heavy) linear switch offers a softer acoustics profile paired with a POM stem, resulting in a distinctively crisp, higher-pitched resonance. This blend of sound qualities provides a more refined auditory experience that elevates the overall typing sensation, though it also emphasizes the nuances of each keystroke. It's essential to consider that the sound of each switch can vary significantly based on the choice of keyboard and keycaps used.
When it comes to the feel of the switches, the HMX SU linear switch is noted for providing a smooth typing experience that caters well to those who enjoy linear switches without a tactile bump. This allows for uninterrupted keystrokes, fostering fluidity in typing or gaming sessions. In contrast, the HMX Xinhai (Heavy) offers a unique balance of lighter operation with a firmer bottom-out experience due to its heavier design. This combination enhances control, making it particularly appealing for users who appreciate a bit more resistance while still benefiting from a linear switch's smoothness.
In conclusion, both the HMX SU and HMX Xinhai (Heavy) linear switches cater to different preferences but share a certain level of sophistication and performance that appeals to keystroke enthusiasts. While the SU delivers a deeper, more subtle sound with a smooth feel, the Xinhai (Heavy) provides crisper audio with a firmer tactile experience. Ultimately, the choice between the two will depend on individual preferences regarding sound and feel, but both can deliver an enjoyable typing experience in their respective ways.
Conclusion
To conclude, your choice between the HMX SU linear switch and the HMX Xinhai (Heavy) linear switch should align with your typing preferences and intended use. If you prefer a lighter touch, the HMX SU, with its 50 grams bottom-out force, will be more to your liking, especially if you enjoy a deeper sound profile for a more subtle acoustic experience. This switch is an excellent choice for extended typing sessions or gaming where you may appreciate the reduced fatigue that comes with a lighter actuation force. On the other hand, if you appreciate a firmer resistance while typing, the HMX Xinhai (Heavy) with its 62.5 grams bottom-out force will provide that added tactile feedback you might seek. The unique PA12 housing and POM stem lend themselves to a crisp, higher-pitched resonance that could enhance your typing satisfaction, particularly if you enjoy that distinctive sound while executing precise keystrokes. Ultimately, your decision should reflect whether you prioritize a lighter or heavier switch feel, as both options excel in delivering a quality typing experience tailored to your specific needs.
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